Manual Gossen Metrawatt Profitest Intro (page 12 of 62) (English)

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12 GMC-I Messtechnik GmbH

If no texts or ID numbers have been entered to the test instrument

when creating structures, ETC generates the missing entries

automatically. These can then be edited in ETC and transferred

back to the test instrument if required.

OFFSET RL-PE / RN-PE / RL-N

For the measurement of

ZL-PE, ZL-N, RE and

ΔU(ZLN), ohmic offset val-

ues RL-PE, RN-PE and RL-N

can be ascertained here,

which then appear in the

footers of the corre-

sponding measuring

menu pages and are sub-

tracted from the mea-

sured values.

➭Connect the mea-

surement cables to

the respective inputs

and short circuit the

test probes by insert-

ing the test plug into the short-circuiting jumper (PRO-

JUMPER, Z503J).

➭Start offset measurement by pressing the respective START

key.

The respective offset value cannot be activated or deactivated,

i.e. set to 0, unless all settings are returned to their default values.

There’s a separate offset value for RLO, which can be ascertained

directly in the RLO switch position.

Note

MEASUREMENT OF RL-PE OR RN-P

In the event that phase voltage might be applied to L or N

at the test probe or the measuring adapter during future

measurements, both offset values must be correspon-

dingly determined. Depending on the connection, the

corresponding offset value is then displayed later in the

measuring menu. If no phase voltage is applied, RL-PE

appears as a standard display

Note

In order to ascertain the RLN-OFFSET value for measurement

of ΔU(ZLN):

Connect the test probe to the point of common coupling

(measuring device / meter).

Firmware Revision and Calibration Information (example)

➭Press any key in order to return to the main menu.

Firmware Update with the MASTER Updater

The layout of the test instruments makes it possible to adapt

device software to the latest standards and regulations. Beyond

this, suggestions from customers result in continuous improve-

ment of test instrument software, as well as new functions.

In order to assure that you can take advantage of all of these ben-

efits without delay, the MASTER Updater allows you to quickly

and completely update your test instrument software on-site.

The user interface can be set to either English, German or Italian.

Note

As a registered user, you’re entitled to download the

MASTER Updater and the current firmware version free of

charge from the myGMC page.

Enter and Select a New Inspector

See also section 5.7 on page 15 regarding the entry of a text.

5 General Notes

5.1 Connecting the Instrument

For systems with earthing contact sockets, connect the instru-

ment to the mains with the KS-PROFITEST INTRO test probes

(Z503L) or with the PRO-Schuko measuring adapter (Z503K).

Voltage between phase conductor L and the PE protective con-

ductor may not exceed 253 V!

Poling at the socket need not be taken into consideration. The

instrument detects the positions of phase conductor L and neu-

tral conductor N and automatically reverses polarity if necessary.

This does not apply to the following measurements:

– Voltage measurement in switch position U

– Insulation resistance measurement

– Low-resistance measurement

If measurement is to be performed at three-phase outlets, in dis-

tribution cabinets or at permanent connections, use the cable set

with KS-PROFITEST INTRO test probes (Z503L) (2-pole), and for

phase sequence testing (3-pole). Connection is established with

the test probes: one at PE or N and the other at L.

5.2 Automatic Settings, Monitoring and Shut-Off

The test instrument automatically selects all operating conditions

which it’s capable of determining itself. It tests line voltage and

frequency. If these lie within their valid nominal ranges, they

appear at the display panel. If they are not within nominal ranges,

prevailing voltage (U) and frequency (f) are displayed instead of UN

and fN.

01.17.00

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Gossen Metrawatt Profitest Intro Manual

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